ALEXANDRIA, Va., June 10 -- United States Patent no. 12,293,651, issued on May 6, was assigned to Honeywell International Inc. (Charlotte, N.C.).
"Self-testing fire sensing device for confirming a fire" was invented by Kamal Raja Ganesan (Chennai, India) and Barath Murugavel (Bangalore, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "Devices, methods, and systems for a self-testing fire sensing device are described herein. One device includes a fan, an optical scatter chamber configured to measure a quantity of particles therein, and a controller configured to compare the quantity to a baseline quantity and transmit a command to a fan responsive to the quantity being greater than the baseline quantity, ...